Import Question JSON

In a leaf, oval cells with large intercellular spaces are typically found in the abaxial epidermis, which is the lower surface of the leaf. These cells are known as stomata, which are specialized structures responsible for gas exchange (such as oxygen and carbon dioxide) and water vapor regulation in plants. On the other hand, radially arranged columnar cells without intercellular spaces are typically found in the adaxial epidermis, which is the upper surface of the leaf. These cells are known as palisade mesophyll cells and are responsible for photosynthesis, as they contain chloroplasts and are the main site of photosynthetic activity in the leaf. Therefore, option 2 ("Abaxial and adaxial epidermis") is the correct answer, as it correctly identifies the placement of the described cell types in the leaf. Option 1 ("Adaxial and abaxial epidermis") and option 4 ("Lower and abaxial epidermis") are not correct, as they have the placement of the cell types reversed. Option 3 ("Abaxial and abaxial epidermis") is not correct, as it suggests that both types of cells are found on the lower surface of the leaf, which is not accurate.